I got my first laptop in 1996, I think. Maybe as early as 1994*. It ran on DOS, and it weighed a ton. the bosses wanted to make sure we had something sturdy, and so they got us big, heavy metalclad clunkers. The ones the bosses got, ran on Windows and weighed about half as much.
-Joe-

(*I date things in the 1990s by which woman I was involved with - the laptop happened during a relationship that lasted 1993-1996.)